ABAP Select data from SAP table U_27109 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP U_27109 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to U_27109. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the U_27109 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_U_27109 TYPE STANDARD TABLE OF U_27109,
      WA_U_27109 TYPE U_27109,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <U_27109> TYPE U_27109.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_U_27109.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM U_27109
  INTO TABLE IT_U_27109.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM U_27109
*  INTO TABLE @DATA(IT_U_271092).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_U_27109 INDEX 1 INTO DATA(WA_U_271092).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_U_27109 ASSIGNING <U_27109>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<U_27109>-MANDT = 1.
<U_27109>-BAREA = 1.
<U_27109>-BPLAN = 1.
<U_27109>-ERCON = 1.
<U_27109>-PERIO = 1.

ENDLOOP.

LOOP AT IT_U_27109 INTO WA_U_27109.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_U_27109-ERCIN, sy-vline,
  WA_U_27109-SALIN, sy-vline,
  WA_U_27109-AGEIN, sy-vline,
  WA_U_27109-LOSIN, sy-vline,
  WA_U_27109-CRGRP, sy-vline,
  WA_U_27109-SALMO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_U_27109 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_U_27109 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_U_27109 INTO WA_U_27109.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_U_27109-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_U_27109-LANGU.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_U_27109_STR, 
MANDT TYPE STRING,
BAREA TYPE STRING,
BPLAN TYPE STRING,
ERCON TYPE STRING,
PERIO TYPE STRING,
ERCIN TYPE STRING,
SALIN TYPE STRING,
AGEIN TYPE STRING,
LOSIN TYPE STRING,
CRGRP TYPE STRING,
SALMO TYPE STRING,
SALDY TYPE STRING,
AGEMO TYPE STRING,
AGEDY TYPE STRING,
SRVMO TYPE STRING,
SRVDY TYPE STRING,
DATTY TYPE STRING,
ENDTY TYPE STRING,
BSALM TYPE STRING,
BSALD TYPE STRING,
WAINU TYPE STRING,
WAIUN TYPE STRING,
CODAY TYPE STRING,
COINT TYPE STRING,
WDTTY TYPE STRING,
LANGU TYPE STRING,
LTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_U_27109_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_U_27109_STR-MANDT sy-vline 
WA_U_27109_STR-BAREA sy-vline 
WA_U_27109_STR-BPLAN sy-vline 
WA_U_27109_STR-ERCON sy-vline 
WA_U_27109_STR-PERIO sy-vline 
WA_U_27109_STR-ERCIN sy-vline 
WA_U_27109_STR-SALIN sy-vline 
WA_U_27109_STR-AGEIN sy-vline 
WA_U_27109_STR-LOSIN sy-vline 
WA_U_27109_STR-CRGRP sy-vline 
WA_U_27109_STR-SALMO sy-vline 
WA_U_27109_STR-SALDY sy-vline 
WA_U_27109_STR-AGEMO sy-vline 
WA_U_27109_STR-AGEDY sy-vline 
WA_U_27109_STR-SRVMO sy-vline 
WA_U_27109_STR-SRVDY sy-vline 
WA_U_27109_STR-DATTY sy-vline 
WA_U_27109_STR-ENDTY sy-vline 
WA_U_27109_STR-BSALM sy-vline 
WA_U_27109_STR-BSALD sy-vline 
WA_U_27109_STR-WAINU sy-vline 
WA_U_27109_STR-WAIUN sy-vline 
WA_U_27109_STR-CODAY sy-vline 
WA_U_27109_STR-COINT sy-vline 
WA_U_27109_STR-WDTTY sy-vline 
WA_U_27109_STR-LANGU sy-vline 
WA_U_27109_STR-LTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.